свой нож

one's own knife

→ свой
phrase Rare #26,872
one's own knife Свой refers to something belonging to the sentence's subject. In a request or command, it can refer to the person being addressed.
RU: Он всегда носит с собой свой нож.
EN: He always carries his own knife.

Дай мне свой нож.

Give me your knife.

— 2+1 (2016)

Том дал Мэри свой нож.

Tom gave Mary his knife.

Одолжите мне свой нож?

Could you lend me your knife?

Он вытащил свой нож.

He pulled out his knife.

Том наточил свой нож.

Tom sharpened his knife.

Том спрятал свой нож под матрас.

Tom hid his knife under the mattress.